It is _fact_ that Emachines uses entirely proprietary motherboards and power supplies. I've seen both. The powersupplies are significantly smaller than any other PC powersupply I've ever seen, and they burn out. The motherboard cannot be replaced with anything (even in Emachines towers where you'd think maybe you could). We're talking 'disposable computer' here, it's the opposite of what the PC is theoretically capable of. The eOne in particular is everything people warned against in the iMac, only this time the inability to fix the machine or get parts is beyond inexcusable.
I build and fix computers and I wont TOUCH an e-machine.